KR101290290B1 - Energy management system and method for ship - Google Patents

Energy management system and method for ship Download PDF

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Publication number
KR101290290B1
KR101290290B1 KR1020110123648A KR20110123648A KR101290290B1 KR 101290290 B1 KR101290290 B1 KR 101290290B1 KR 1020110123648 A KR1020110123648 A KR 1020110123648A KR 20110123648 A KR20110123648 A KR 20110123648A KR 101290290 B1 KR101290290 B1 KR 101290290B1
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KR
South Korea
Prior art keywords
load
power
ship
generator
energy management
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KR1020110123648A
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Korean (ko)
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KR20130057750A (en
Inventor
오진석
Original Assignee
한국해양대학교 산학협력단
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Priority to KR1020110123648A priority Critical patent/KR101290290B1/en
Publication of KR20130057750A publication Critical patent/KR20130057750A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63JAUXILIARIES ON VESSELS
    • B63J3/00Driving of auxiliaries
    • B63J3/02Driving of auxiliaries from propulsion power plant
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B63SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63JAUXILIARIES ON VESSELS
    • B63J3/00Driving of auxiliaries
    • B63J3/04Driving of auxiliaries from power plant other than propulsion power plant
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/383Solar energy, e.g. photovoltaic energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381Dispersed generators
    • H02J3/382Dispersed generators the generators exploiting renewable energy
    • H02J3/386Wind energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J4/00Circuit arrangements for mains or distribution networks not specified as ac or dc
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J9/00Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20The dispersed energy generation being of renewable origin
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20The dispersed energy generation being of renewable origin
    • H02J2300/22The renewable source being solar energy
    • H02J2300/24The renewable source being solar energy of photovoltaic origin
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20The dispersed energy generation being of renewable origin
    • H02J2300/28The renewable source being wind energy
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/40Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation wherein a plurality of decentralised, dispersed or local energy generation technologies are operated simultaneously
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2310/00The network for supplying or distributing electric power characterised by its spatial reach or by the load
    • H02J2310/40The network being an on-board power network, i.e. within a vehicle
    • H02J2310/42The network being an on-board power network, i.e. within a vehicle for ships or vessels
    • Y02E10/563
    • Y02E10/763

Abstract

Disclosed are an energy management system and method of a vessel. The energy management system and method of the ship according to an embodiment of the present invention includes a main power generation unit for supplying power to the load of the ship including a plurality of generators; An emergency power generation unit including a storage battery for charging electric energy generated from a wind power source using wind and a solar power source using solar light; Load power measuring unit for measuring the power consumption in the load of the ship; An environmental measurement unit for measuring environmental data including sea water temperature and outside air temperature; And a controller configured to control only one of the plurality of generators by controlling power output of the main power generation unit or the emergency power generation unit according to the power consumption measured by the load power measuring unit and the environmental data measured by the environmental measurement unit. It is characterized by.

Description

Energy management system and method for ship

The present invention relates to an energy management system of a ship, and more particularly, to effectively control and manage a ship's power generation system and loads in an optimal state to efficiently manage the stability of the operation and the power used, thereby actively reducing the ship generator fuel consumption. A ship's energy management system.

The concept of energy saving was not established in existing ships, but merely the concept of operating and stopping related equipment.

Recently, an energy saving system (ESS) has been developed, and a system has been developed to control the rotational speed of a large-scale seawater pump according to seawater temperature to obtain an energy saving effect proportional to the load reduction.

However, this is only a method of obtaining energy saving effect through load control on one equipment (seawater pump) rather than energy saving for the whole vessel, and there is a limit in energy saving, and it is not applicable to small vessels.

In addition, the energy management system according to the prior art generates power by operating generators in parallel when a large amount of power is required, and is constructed in the form of maintenance or emergency generators installed, so that the generator must operate at all times, thus reducing the load onboard. There was a problem of inefficiency.

On the other hand, the energy system used in a ship or the like according to the prior art is specifically disclosed in the Republic of Korea Patent Publication No. 10-2008-7018590, "Method for operating the energy system of the ship and an energy system suitable thereto."

The energy system for ships according to the prior art has a problem that it is not possible to have a practical and active energy saving mechanism by optimally managing various loads required for a vessel.

It is an object of the present invention to optimally integrate and manage air-conditioning and air supply / exhaust loads for operation environment, sea load, air conditioner, etc. In addition to reducing energy consumption, the company aims to provide a ship's energy management system that can reduce the fuel consumption associated with the operation of the generator and enable actual and active energy saving.

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According to the present invention, the power supplied to the operating load, unloading load, air conditioning load in a ship equipped with a plurality of generators, and a battery for charging the electric energy generated from the wind power source using the wind and the photovoltaic power source using the solar light In the energy management method of a ship for managing, (a) inputting the type of load to be managed and the amount of power generated by the generator; (b) inputting environmental data including the amount of power being used in each load and seawater temperature and atmospheric temperature; (c) setting an operation mode of each load according to the input amount of electricity and environment data; (d) driving the unloading and air conditioning loads and the operating load when the output of any one generator operating in accordance with the determined operation mode is 85% or less, and stopping the operation of the unloading or air conditioning loads if the output exceeds 85%; (e) In case of stopping operation of unloading load or air conditioning load in the step (d), if the output of any one generator is less than 85%, drive the operating load, and if it exceeds 85%, operate the other generator together. Driving a navigation load; (f) feedback to the step (b); may be provided a method of managing the energy of a ship comprising a.

Here, a step of supplying emergency power from the storage battery to the respective loads may be further added between the steps (e) and (f).

Embodiments of the present invention can reduce the fuel consumption by providing an energy management system that can minimize the load on the ship to minimize the situation that two or more generators operating in the ship at the same time operating. To this end, it has a structure to minimize the fuel consumption of the ship generator by directly controlling and managing the load, air conditioning and operating load.

In addition, it can be designed to interlock the emergency power system based on renewable energy (solar, wind power, etc.) to have the ship's power compensation and emergency power mechanism.

1 is a block diagram showing the configuration of an energy management system of a ship according to an embodiment of the present invention.
2 is a block diagram of the present invention shown in FIG.
Figure 3 is a flow chart showing the procedure of the energy management method of the ship according to another embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described in detail a preferred embodiment of the present invention. The following description and the accompanying drawings are presented for the overall understanding of the present invention, and thus the technical scope of the present invention is not limited thereto. And a detailed description of known configurations and functions that may unnecessarily obscure the subject matter of the present invention will be omitted.

1 is a block diagram showing the configuration of a ship's energy management system according to an embodiment of the present invention, Figure 2 shows a block diagram of the present invention shown in FIG.

Referring to FIG. 1, an energy management system of a ship according to the present invention includes a main power generation unit, an emergency power generation unit, a load power measurement unit 30, an environmental measurement unit 40, and a controller 50.

The main power generation unit includes a generator 10 for producing electrical energy using fossil fuel, the generator 10 is provided with a plurality.

In addition, the emergency power generation unit charges the electric energy generated from the wind power source for producing electrical energy using wind power and the solar power source for producing electrical energy using solar power, and supplies the battery 70 to the load 70. ).

In addition, the load power measuring unit 30 measures the power consumption of the load 70. That is, the total amount of power consumed by the use of power according to the connection of various types and a plurality of loads 70 may increase, and the amount of power used at the load may be measured by measuring the amount of power or current and voltage supplied at this time.

In this case, the load 70 may be classified as an operation load 72, an unloading load 74, and an air conditioning load 76.

The operation load 72 is a heavy load having a direct influence on the operation, and is a load 70 capable of saving energy by adjusting the driving load 70 according to seawater temperature and operating conditions of the main engine. For example, it corresponds to a cooling water pump such as a main cooling sea water pump and a fresh water pump.

And the unloading load 74 is a load 70 that does not have a direct effect on the ship operation is an energy-saving load by controlling the amount of generator operation. For example, it corresponds to a crane, windlass, a winch, etc.

In addition, the air conditioning load 76 has no direct influence on the operation of the ship and is a load for adjusting the load according to the temperature of the ship (outside air) as a load for the living environment of the crew, and corresponds to a cooling / heating system, an air supply / exhaust ventilation system, and an illumination system. .

Next, the environmental measurement unit 40 measures environmental data such as seawater temperature or outside temperature, and may be provided with a temperature through an external sensor.

The controller 50 controls the power production of the main power generation unit or the emergency power generation unit according to the power consumption measured by the load power measurement unit 30 and the environmental data measured by the environment measurement unit 40.

At this time, the control purpose of the control unit 50 is optimally integrated management of the load 70 according to the operating conditions, sea water temperature, outside air temperature to reduce the energy consumption for the equipment operation and fuel consumption according to the operation of the generator 10 In other words, real and active energy savings are realized.

To this end, the control unit 50 allows the plurality of generators 10 to be operated alone or in parallel (meaning two units are operated simultaneously) according to the load. That is, the generator 10 is to have the optimum operating conditions and the minimum fuel economy, which is most efficient when less than 85% of the output capacity of the generator 10.

Therefore, the control unit 50 basically operates alone to minimize the situation in which two or more generators 10 are simultaneously operated, and controls the other generators 10 to be operated in parallel when the capacity exceeds 85%.

Here, the standard of 85% is usually selected including the upper limit of the range of generator safe operation and the concept of the upper limit of the generation load to create the best operating environment for maintenance.

The controller 50 may determine whether the respective loads are operated and an operation mode with reference to the data input from the load power measuring unit 30 and the environment measuring unit 40.

For reference, a distribution unit 60 is further provided between the control unit 50 and the load 70 to distribute power to each load, and the control unit 50 controls the distribution unit 60.

Hereinafter, a method of managing energy of a ship according to another embodiment of the present invention will be described with reference to FIG. 3. 3 is a flow chart showing the procedure of the energy management method of the ship according to another embodiment of the present invention.

First, step (a) is an initial value input step, inputs the type of control target, that is, the load 70 to be managed by the energy management system according to the present invention, and inputs the amount of generated power of the generator 10. )

In the step (b), the amount of power being used by each load 70 measured by the load power measuring unit 30 and the environmental data (sea water temperature, outside air temperature, etc.) measured by the environmental measuring unit 40 are inputted. . In this case, the input means to be electrically input to the control unit 50 and will be said to be provided in near real time.

Next, step (c) is to set an operation mode of each load 70 according to the input power amount and environment data, and the operation mode means a mode that is specifically operated including whether each device is operated. For example, when a vessel in operation changes the operating conditions from an outside temperature range of 30 degrees to a 20 degree range, the air conditioner can be switched to a mode for controlling ventilation and temperature by only operating a fan. (S300)

After completing step (c), it is determined whether the generator can be operated alone in step (d). That is, it is determined whether the generator output exceeds 85% in a state where the system is optimally controlled according to the various conditions and conditions described above (S400).

As shown, if the 85% or less, the unloading load 74 and the air conditioning load 76 continue to operate and the operating load 72 also operates. (S410) However, if the load exceeds 85%, the unloading load 74 ) Or stop the operation of the air conditioning load 76 or lower the operation rate of each equipment. (S420)

 Next, step (e) again determines whether the output of the generator 10 exceeds 85% when the operation of the unloading load or the air conditioning load 76 is stopped in the step (d).

At this time, if less than 85% to drive the operating load (72) (S600), if exceeding 85% to run another generator 10 together to perform parallel operation (S510) and drive the operating load (72). (S600)

This state is fed back to step (b) as in step (f), and the power consumption and environmental data of each load are input again to control the optimum generator operation.

Preferably, step (S700) may be further provided between the (e) and (f) step of supplying power to each load 70 from the battery 20 charged from the renewable energy by wind or solar light. That is, when two or more generators 10 are operated, emergency power may be supplied from the storage battery 20 to stabilize the operation of the generators and minimize energy consumption of the generators.

In short, the present invention manages the load so that the generator can be operated alone, so that the load does not exceed the optimal operation set value (about 85% of the generator output) in order to primarily perform the prevention of fuel consumption by parallel operation. The air conditioning load is managed, and the process of reducing the amount of power used through the operation load is performed.

For reference, the present invention may be controlled independently and interlocked through modularization for each component, and it may be preferable that the energy management system of the present invention is integrated with the ship's control system.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. And changes may be made without departing from the spirit and scope of the invention.

10: generator 20: storage battery
30: load power measurement unit 40: environmental measurement unit
50: control unit 60: power distribution unit
70: load 72: operating load
74: unloading load 76: air conditioning load

Claims (4)

  1. delete
  2. delete
  3. In a ship equipped with a plurality of generators and a storage battery for charging electric energy generated from a wind power source using wind power and a solar power source using solar light, In the energy management method,
    (a) inputting the type of load to be managed and the amount of power generated by the generator;
    (b) inputting environmental data including the amount of power being used in each load and seawater temperature and atmospheric temperature;
    (c) setting an operation mode of each load according to the input amount of electricity and environment data;
    (d) driving the unloading and air conditioning loads and the operating load when the output of any one generator operating in accordance with the set operation mode is 85% or less;
    (e) In case of stopping operation of unloading load or air conditioning load in the step (d), if the output of any one generator is less than 85%, drive the operating load, and if it exceeds 85%, operate the other generator together. Driving a navigation load;
    (f) feedback to the step (b); energy management method of a ship comprising a.
  4. The method of claim 3, wherein
    Between step (e) and (f) is the step of supplying emergency power to each of the load from the battery is further characterized in that the ship's energy management method.
KR1020110123648A 2011-11-24 2011-11-24 Energy management system and method for ship KR101290290B1 (en)

Priority Applications (1)

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KR1020110123648A KR101290290B1 (en) 2011-11-24 2011-11-24 Energy management system and method for ship
PCT/KR2012/000106 WO2013077495A1 (en) 2011-11-24 2012-01-05 System and method for managing energy of ship
CN201280000749.5A CN103228533B (en) 2011-11-24 2012-01-05 Energy management system for ship and method

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Cited By (3)

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Publication number Priority date Publication date Assignee Title
CN107140168A (en) * 2017-04-26 2017-09-08 武汉理工大学 A kind of hybrid power ship EMS and control method based on WAVELET FUZZY logic
KR20180061585A (en) 2016-11-30 2018-06-08 한국해양대학교 산학협력단 Battery-connected high efficiency power management system for ship and offshore plant
KR20200025731A (en) 2018-08-31 2020-03-10 전자부품연구원 Energy management system and control method for power control using Voltage Regulation

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KR101681725B1 (en) * 2015-04-10 2016-12-01 대우조선해양 주식회사 Power Control Method for FLNG
KR20190022983A (en) 2017-08-24 2019-03-07 전자부품연구원 System and method of charging operation of ship

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KR20180061585A (en) 2016-11-30 2018-06-08 한국해양대학교 산학협력단 Battery-connected high efficiency power management system for ship and offshore plant
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CN107140168A (en) * 2017-04-26 2017-09-08 武汉理工大学 A kind of hybrid power ship EMS and control method based on WAVELET FUZZY logic
CN107140168B (en) * 2017-04-26 2019-03-19 武汉理工大学 It is a kind of based on small echo-fuzzy logic hybrid power ship Energy Management System and control method
KR20200025731A (en) 2018-08-31 2020-03-10 전자부품연구원 Energy management system and control method for power control using Voltage Regulation

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CN103228533B (en) 2016-03-09
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KR20130057750A (en) 2013-06-03

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